Amevive is the first treatment for psoriasis, a skin disease that affects some 4 million patients in the U.S. It occurs because patients' immune systems run amok for unknown reasons, causing painful lesions and rashes.

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But Internet shares are causing particular concern, for two reasons.

ECONOMIST: The e-commerce boom is changing business��for the better

That's causing shoppers to cut back, one of the reasons the economy is losing traction.

NPR: Some Banks Hoarding Bailout Money